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Code Issues Releases Wiki Activity

netdev-offload-tc: Allow installing arp rules to TC dp.

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This patch allows to install arp rules to tc dp.
In the future, arp will be offloaded to hardware to
be processed. So OvS enable this now.

$ ovs-appctl dpctl/add-flow 'recirc_id(0),in_port(3),eth(),\
  eth_type(0x0806),arp(op=2,tha=00:50:56:e1:4b:ab,tip=10.255.1.116)' 2

$ ovs-appctl dpctl/dump-flows
  ... arp(tip=10.255.1.116,op=2,tha=00:50:56:e1:4b:ab) ...

$ tc filter show dev <ethx> ingress
  ...
  eth_type arp
  arp_tip 10.255.1.116
  arp_op reply
  arp_tha 00:50:56:e1:4b:ab
  not_in_hw
    action order 1: mirred (Egress Redirect to device <ethy>) stolen
    ...

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
This commit is contained in:
Tonghao Zhang
2020-06-05 21:17:29 +08:00
committed by Simon Horman
parent 5db012c4ac
commit a3db6e473d
6 changed files with 146 additions and 1 deletions
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27
lib/netdev-offload-tc.c
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@@ -589,6 +589,14 @@ parse_tc_flower_to_match(struct tc_flower *flower,
match->flow.mpls_lse[0] = key->mpls_lse & mask->mpls_lse;
match->wc.masks.mpls_lse[0] = mask->mpls_lse;
match_set_dl_type(match, key->encap_eth_type[0]);
} else if (key->eth_type == htons(ETH_TYPE_ARP)) {
match_set_arp_sha_masked(match, key->arp.sha, mask->arp.sha);
match_set_arp_tha_masked(match, key->arp.tha, mask->arp.tha);
match_set_arp_spa_masked(match, key->arp.spa, mask->arp.spa);
match_set_arp_tpa_masked(match, key->arp.tpa, mask->arp.tpa);
match_set_arp_opcode_masked(match, key->arp.opcode,
mask->arp.opcode);
match_set_dl_type(match, key->eth_type);
} else {
match_set_dl_type(match, key->eth_type);
}
@@ -1558,6 +1566,25 @@ netdev_tc_flow_put(struct netdev *netdev, struct match *match,
mask->dl_type = 0;
mask->in_port.odp_port = 0;
if (key->dl_type == htons(ETH_P_ARP)) {
flower.key.arp.spa = key->nw_src;
flower.key.arp.tpa = key->nw_dst;
flower.key.arp.sha = key->arp_sha;
flower.key.arp.tha = key->arp_tha;
flower.key.arp.opcode = key->nw_proto;
flower.mask.arp.spa = mask->nw_src;
flower.mask.arp.tpa = mask->nw_dst;
flower.mask.arp.sha = mask->arp_sha;
flower.mask.arp.tha = mask->arp_tha;
flower.mask.arp.opcode = mask->nw_proto;
mask->nw_src = 0;
mask->nw_dst = 0;
mask->nw_proto = 0;
memset(&mask->arp_sha, 0, sizeof mask->arp_sha);
memset(&mask->arp_tha, 0, sizeof mask->arp_tha);
}
if (is_ip_any(key)) {
flower.key.ip_proto = key->nw_proto;
flower.mask.ip_proto = mask->nw_proto;